include/SDL_stdinc.h
author Ryan C. Gordon <icculus@icculus.org>
Fri, 10 Aug 2018 15:22:02 -0400
changeset 12108 eb2820ee52ee
parent 12088 399cc39583cc
permissions -rw-r--r--
libm: one more static analysis fix.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 
    22 /**
    23  *  \file SDL_stdinc.h
    24  *
    25  *  This is a general header that includes C language support.
    26  */
    27 
    28 #ifndef SDL_stdinc_h_
    29 #define SDL_stdinc_h_
    30 
    31 #include "SDL_config.h"
    32 
    33 #ifdef HAVE_SYS_TYPES_H
    34 #include <sys/types.h>
    35 #endif
    36 #ifdef HAVE_STDIO_H
    37 #include <stdio.h>
    38 #endif
    39 #if defined(STDC_HEADERS)
    40 # include <stdlib.h>
    41 # include <stddef.h>
    42 # include <stdarg.h>
    43 #else
    44 # if defined(HAVE_STDLIB_H)
    45 #  include <stdlib.h>
    46 # elif defined(HAVE_MALLOC_H)
    47 #  include <malloc.h>
    48 # endif
    49 # if defined(HAVE_STDDEF_H)
    50 #  include <stddef.h>
    51 # endif
    52 # if defined(HAVE_STDARG_H)
    53 #  include <stdarg.h>
    54 # endif
    55 #endif
    56 #ifdef HAVE_STRING_H
    57 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
    58 #  include <memory.h>
    59 # endif
    60 # include <string.h>
    61 #endif
    62 #ifdef HAVE_STRINGS_H
    63 # include <strings.h>
    64 #endif
    65 #ifdef HAVE_WCHAR_H
    66 # include <wchar.h>
    67 #endif
    68 #if defined(HAVE_INTTYPES_H)
    69 # include <inttypes.h>
    70 #elif defined(HAVE_STDINT_H)
    71 # include <stdint.h>
    72 #endif
    73 #ifdef HAVE_CTYPE_H
    74 # include <ctype.h>
    75 #endif
    76 #ifdef HAVE_MATH_H
    77 # if defined(__WINRT__)
    78 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
    79    WinRT.  See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
    80    for more information.
    81 */
    82 #  define _USE_MATH_DEFINES
    83 # endif
    84 # include <math.h>
    85 #endif
    86 #ifdef HAVE_FLOAT_H
    87 # include <float.h>
    88 #endif
    89 #if defined(HAVE_ALLOCA) && !defined(alloca)
    90 # if defined(HAVE_ALLOCA_H)
    91 #  include <alloca.h>
    92 # elif defined(__GNUC__)
    93 #  define alloca __builtin_alloca
    94 # elif defined(_MSC_VER)
    95 #  include <malloc.h>
    96 #  define alloca _alloca
    97 # elif defined(__WATCOMC__)
    98 #  include <malloc.h>
    99 # elif defined(__BORLANDC__)
   100 #  include <malloc.h>
   101 # elif defined(__DMC__)
   102 #  include <stdlib.h>
   103 # elif defined(__AIX__)
   104 #pragma alloca
   105 # elif defined(__MRC__)
   106 void *alloca(unsigned);
   107 # else
   108 char *alloca();
   109 # endif
   110 #endif
   111 
   112 /**
   113  *  The number of elements in an array.
   114  */
   115 #define SDL_arraysize(array)    (sizeof(array)/sizeof(array[0]))
   116 #define SDL_TABLESIZE(table)    SDL_arraysize(table)
   117 
   118 /**
   119  *  Macro useful for building other macros with strings in them
   120  *
   121  *  e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
   122  */
   123 #define SDL_STRINGIFY_ARG(arg)  #arg
   124 
   125 /**
   126  *  \name Cast operators
   127  *
   128  *  Use proper C++ casts when compiled as C++ to be compatible with the option
   129  *  -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
   130  */
   131 /* @{ */
   132 #ifdef __cplusplus
   133 #define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
   134 #define SDL_static_cast(type, expression) static_cast<type>(expression)
   135 #define SDL_const_cast(type, expression) const_cast<type>(expression)
   136 #else
   137 #define SDL_reinterpret_cast(type, expression) ((type)(expression))
   138 #define SDL_static_cast(type, expression) ((type)(expression))
   139 #define SDL_const_cast(type, expression) ((type)(expression))
   140 #endif
   141 /* @} *//* Cast operators */
   142 
   143 /* Define a four character code as a Uint32 */
   144 #define SDL_FOURCC(A, B, C, D) \
   145     ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
   146      (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
   147      (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
   148      (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))
   149 
   150 /**
   151  *  \name Basic data types
   152  */
   153 /* @{ */
   154 
   155 #ifdef __CC_ARM
   156 /* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
   157 #define SDL_FALSE 0
   158 #define SDL_TRUE 1
   159 typedef int SDL_bool;
   160 #else
   161 typedef enum
   162 {
   163     SDL_FALSE = 0,
   164     SDL_TRUE = 1
   165 } SDL_bool;
   166 #endif
   167 
   168 /**
   169  * \brief A signed 8-bit integer type.
   170  */
   171 #define SDL_MAX_SINT8   ((Sint8)0x7F)           /* 127 */
   172 #define SDL_MIN_SINT8   ((Sint8)(~0x7F))        /* -128 */
   173 typedef int8_t Sint8;
   174 /**
   175  * \brief An unsigned 8-bit integer type.
   176  */
   177 #define SDL_MAX_UINT8   ((Uint8)0xFF)           /* 255 */
   178 #define SDL_MIN_UINT8   ((Uint8)0x00)           /* 0 */
   179 typedef uint8_t Uint8;
   180 /**
   181  * \brief A signed 16-bit integer type.
   182  */
   183 #define SDL_MAX_SINT16  ((Sint16)0x7FFF)        /* 32767 */
   184 #define SDL_MIN_SINT16  ((Sint16)(~0x7FFF))     /* -32768 */
   185 typedef int16_t Sint16;
   186 /**
   187  * \brief An unsigned 16-bit integer type.
   188  */
   189 #define SDL_MAX_UINT16  ((Uint16)0xFFFF)        /* 65535 */
   190 #define SDL_MIN_UINT16  ((Uint16)0x0000)        /* 0 */
   191 typedef uint16_t Uint16;
   192 /**
   193  * \brief A signed 32-bit integer type.
   194  */
   195 #define SDL_MAX_SINT32  ((Sint32)0x7FFFFFFF)    /* 2147483647 */
   196 #define SDL_MIN_SINT32  ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
   197 typedef int32_t Sint32;
   198 /**
   199  * \brief An unsigned 32-bit integer type.
   200  */
   201 #define SDL_MAX_UINT32  ((Uint32)0xFFFFFFFFu)   /* 4294967295 */
   202 #define SDL_MIN_UINT32  ((Uint32)0x00000000)    /* 0 */
   203 typedef uint32_t Uint32;
   204 
   205 /**
   206  * \brief A signed 64-bit integer type.
   207  */
   208 #define SDL_MAX_SINT64  ((Sint64)0x7FFFFFFFFFFFFFFFll)      /* 9223372036854775807 */
   209 #define SDL_MIN_SINT64  ((Sint64)(~0x7FFFFFFFFFFFFFFFll))   /* -9223372036854775808 */
   210 typedef int64_t Sint64;
   211 /**
   212  * \brief An unsigned 64-bit integer type.
   213  */
   214 #define SDL_MAX_UINT64  ((Uint64)0xFFFFFFFFFFFFFFFFull)     /* 18446744073709551615 */
   215 #define SDL_MIN_UINT64  ((Uint64)(0x0000000000000000ull))   /* 0 */
   216 typedef uint64_t Uint64;
   217 
   218 /* @} *//* Basic data types */
   219 
   220 /* Make sure we have macros for printing 64 bit values.
   221  * <stdint.h> should define these but this is not true all platforms.
   222  * (for example win32) */
   223 #ifndef SDL_PRIs64
   224 #ifdef PRIs64
   225 #define SDL_PRIs64 PRIs64
   226 #elif defined(__WIN32__)
   227 #define SDL_PRIs64 "I64d"
   228 #elif defined(__LINUX__) && defined(__LP64__)
   229 #define SDL_PRIs64 "ld"
   230 #else
   231 #define SDL_PRIs64 "lld"
   232 #endif
   233 #endif
   234 #ifndef SDL_PRIu64
   235 #ifdef PRIu64
   236 #define SDL_PRIu64 PRIu64
   237 #elif defined(__WIN32__)
   238 #define SDL_PRIu64 "I64u"
   239 #elif defined(__LINUX__) && defined(__LP64__)
   240 #define SDL_PRIu64 "lu"
   241 #else
   242 #define SDL_PRIu64 "llu"
   243 #endif
   244 #endif
   245 #ifndef SDL_PRIx64
   246 #ifdef PRIx64
   247 #define SDL_PRIx64 PRIx64
   248 #elif defined(__WIN32__)
   249 #define SDL_PRIx64 "I64x"
   250 #elif defined(__LINUX__) && defined(__LP64__)
   251 #define SDL_PRIx64 "lx"
   252 #else
   253 #define SDL_PRIx64 "llx"
   254 #endif
   255 #endif
   256 #ifndef SDL_PRIX64
   257 #ifdef PRIX64
   258 #define SDL_PRIX64 PRIX64
   259 #elif defined(__WIN32__)
   260 #define SDL_PRIX64 "I64X"
   261 #elif defined(__LINUX__) && defined(__LP64__)
   262 #define SDL_PRIX64 "lX"
   263 #else
   264 #define SDL_PRIX64 "llX"
   265 #endif
   266 #endif
   267 
   268 /* Annotations to help code analysis tools */
   269 #ifdef SDL_DISABLE_ANALYZE_MACROS
   270 #define SDL_IN_BYTECAP(x)
   271 #define SDL_INOUT_Z_CAP(x)
   272 #define SDL_OUT_Z_CAP(x)
   273 #define SDL_OUT_CAP(x)
   274 #define SDL_OUT_BYTECAP(x)
   275 #define SDL_OUT_Z_BYTECAP(x)
   276 #define SDL_PRINTF_FORMAT_STRING
   277 #define SDL_SCANF_FORMAT_STRING
   278 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
   279 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
   280 #else
   281 #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
   282 #include <sal.h>
   283 
   284 #define SDL_IN_BYTECAP(x) _In_bytecount_(x)
   285 #define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
   286 #define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
   287 #define SDL_OUT_CAP(x) _Out_cap_(x)
   288 #define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
   289 #define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
   290 
   291 #define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
   292 #define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
   293 #else
   294 #define SDL_IN_BYTECAP(x)
   295 #define SDL_INOUT_Z_CAP(x)
   296 #define SDL_OUT_Z_CAP(x)
   297 #define SDL_OUT_CAP(x)
   298 #define SDL_OUT_BYTECAP(x)
   299 #define SDL_OUT_Z_BYTECAP(x)
   300 #define SDL_PRINTF_FORMAT_STRING
   301 #define SDL_SCANF_FORMAT_STRING
   302 #endif
   303 #if defined(__GNUC__)
   304 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
   305 #define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
   306 #else
   307 #define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
   308 #define SDL_SCANF_VARARG_FUNC( fmtargnumber )
   309 #endif
   310 #endif /* SDL_DISABLE_ANALYZE_MACROS */
   311 
   312 #define SDL_COMPILE_TIME_ASSERT(name, x)               \
   313        typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
   314 /** \cond */
   315 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
   316 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
   317 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
   318 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
   319 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
   320 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
   321 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
   322 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
   323 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
   324 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
   325 /** \endcond */
   326 
   327 /* Check to make sure enums are the size of ints, for structure packing.
   328    For both Watcom C/C++ and Borland C/C++ the compiler option that makes
   329    enums having the size of an int must be enabled.
   330    This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
   331 */
   332 
   333 /** \cond */
   334 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
   335 #if !defined(__ANDROID__)
   336    /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
   337 typedef enum
   338 {
   339     DUMMY_ENUM_VALUE
   340 } SDL_DUMMY_ENUM;
   341 
   342 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
   343 #endif
   344 #endif /* DOXYGEN_SHOULD_IGNORE_THIS */
   345 /** \endcond */
   346 
   347 #include "begin_code.h"
   348 /* Set up for C function definitions, even when using C++ */
   349 #ifdef __cplusplus
   350 extern "C" {
   351 #endif
   352 
   353 #ifdef HAVE_ALLOCA
   354 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
   355 #define SDL_stack_free(data)
   356 #else
   357 #define SDL_stack_alloc(type, count)    (type*)SDL_malloc(sizeof(type)*(count))
   358 #define SDL_stack_free(data)            SDL_free(data)
   359 #endif
   360 
   361 extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
   362 extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
   363 extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
   364 extern DECLSPEC void SDLCALL SDL_free(void *mem);
   365 
   366 typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
   367 typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
   368 typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
   369 typedef void (SDLCALL *SDL_free_func)(void *mem);
   370 
   371 /**
   372  *  \brief Get the current set of SDL memory functions
   373  */
   374 extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
   375                                                     SDL_calloc_func *calloc_func,
   376                                                     SDL_realloc_func *realloc_func,
   377                                                     SDL_free_func *free_func);
   378 
   379 /**
   380  *  \brief Replace SDL's memory allocation functions with a custom set
   381  *
   382  *  \note If you are replacing SDL's memory functions, you should call
   383  *        SDL_GetNumAllocations() and be very careful if it returns non-zero.
   384  *        That means that your free function will be called with memory
   385  *        allocated by the previous memory allocation functions.
   386  */
   387 extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
   388                                                    SDL_calloc_func calloc_func,
   389                                                    SDL_realloc_func realloc_func,
   390                                                    SDL_free_func free_func);
   391 
   392 /**
   393  *  \brief Get the number of outstanding (unfreed) allocations
   394  */
   395 extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);
   396 
   397 extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
   398 extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);
   399 
   400 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));
   401 
   402 extern DECLSPEC int SDLCALL SDL_abs(int x);
   403 
   404 /* !!! FIXME: these have side effects. You probably shouldn't use them. */
   405 /* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
   406 #define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
   407 #define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
   408 
   409 extern DECLSPEC int SDLCALL SDL_isdigit(int x);
   410 extern DECLSPEC int SDLCALL SDL_isspace(int x);
   411 extern DECLSPEC int SDLCALL SDL_toupper(int x);
   412 extern DECLSPEC int SDLCALL SDL_tolower(int x);
   413 
   414 extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);
   415 
   416 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
   417 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))
   418 
   419 /* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
   420 SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
   421 {
   422 #if defined(__GNUC__) && defined(i386)
   423     int u0, u1, u2;
   424     __asm__ __volatile__ (
   425         "cld \n\t"
   426         "rep ; stosl \n\t"
   427         : "=&D" (u0), "=&a" (u1), "=&c" (u2)
   428         : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
   429         : "memory"
   430     );
   431 #else
   432     size_t _n = (dwords + 3) / 4;
   433     Uint32 *_p = SDL_static_cast(Uint32 *, dst);
   434     Uint32 _val = (val);
   435     if (dwords == 0)
   436         return;
   437     switch (dwords % 4)
   438     {
   439         case 0: do {    *_p++ = _val;   /* fallthrough */
   440         case 3:         *_p++ = _val;   /* fallthrough */
   441         case 2:         *_p++ = _val;   /* fallthrough */
   442         case 1:         *_p++ = _val;   /* fallthrough */
   443         } while ( --_n );
   444     }
   445 #endif
   446 }
   447 
   448 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
   449 
   450 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
   451 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
   452 
   453 extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
   454 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
   455 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
   456 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
   457 extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);
   458 
   459 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
   460 extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
   461 extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
   462 extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
   463 extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
   464 extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
   465 extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
   466 extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
   467 extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
   468 extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
   469 extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
   470 extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);
   471 
   472 extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
   473 extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
   474 extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
   475 extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
   476 extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
   477 extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);
   478 
   479 extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
   480 extern DECLSPEC double SDLCALL SDL_atof(const char *str);
   481 extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
   482 extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
   483 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
   484 extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
   485 extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);
   486 
   487 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
   488 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
   489 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
   490 extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);
   491 
   492 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
   493 extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
   494 extern DECLSPEC int SDLCALL SDL_snprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, SDL_PRINTF_FORMAT_STRING const char *fmt, ... ) SDL_PRINTF_VARARG_FUNC(3);
   495 extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);
   496 
   497 #ifndef HAVE_M_PI
   498 #ifndef M_PI
   499 #define M_PI    3.14159265358979323846264338327950288   /**< pi */
   500 #endif
   501 #endif
   502 
   503 extern DECLSPEC double SDLCALL SDL_acos(double x);
   504 extern DECLSPEC float SDLCALL SDL_acosf(float x);
   505 extern DECLSPEC double SDLCALL SDL_asin(double x);
   506 extern DECLSPEC float SDLCALL SDL_asinf(float x);
   507 extern DECLSPEC double SDLCALL SDL_atan(double x);
   508 extern DECLSPEC float SDLCALL SDL_atanf(float x);
   509 extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
   510 extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
   511 extern DECLSPEC double SDLCALL SDL_ceil(double x);
   512 extern DECLSPEC float SDLCALL SDL_ceilf(float x);
   513 extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
   514 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
   515 extern DECLSPEC double SDLCALL SDL_cos(double x);
   516 extern DECLSPEC float SDLCALL SDL_cosf(float x);
   517 extern DECLSPEC double SDLCALL SDL_exp(double x);
   518 extern DECLSPEC float SDLCALL SDL_expf(float x);
   519 extern DECLSPEC double SDLCALL SDL_fabs(double x);
   520 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
   521 extern DECLSPEC double SDLCALL SDL_floor(double x);
   522 extern DECLSPEC float SDLCALL SDL_floorf(float x);
   523 extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
   524 extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
   525 extern DECLSPEC double SDLCALL SDL_log(double x);
   526 extern DECLSPEC float SDLCALL SDL_logf(float x);
   527 extern DECLSPEC double SDLCALL SDL_log10(double x);
   528 extern DECLSPEC float SDLCALL SDL_log10f(float x);
   529 extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
   530 extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
   531 extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
   532 extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
   533 extern DECLSPEC double SDLCALL SDL_sin(double x);
   534 extern DECLSPEC float SDLCALL SDL_sinf(float x);
   535 extern DECLSPEC double SDLCALL SDL_sqrt(double x);
   536 extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
   537 extern DECLSPEC double SDLCALL SDL_tan(double x);
   538 extern DECLSPEC float SDLCALL SDL_tanf(float x);
   539 
   540 /* The SDL implementation of iconv() returns these error codes */
   541 #define SDL_ICONV_ERROR     (size_t)-1
   542 #define SDL_ICONV_E2BIG     (size_t)-2
   543 #define SDL_ICONV_EILSEQ    (size_t)-3
   544 #define SDL_ICONV_EINVAL    (size_t)-4
   545 
   546 /* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
   547 typedef struct _SDL_iconv_t *SDL_iconv_t;
   548 extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
   549                                                    const char *fromcode);
   550 extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
   551 extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
   552                                          size_t * inbytesleft, char **outbuf,
   553                                          size_t * outbytesleft);
   554 /**
   555  *  This function converts a string between encodings in one pass, returning a
   556  *  string that must be freed with SDL_free() or NULL on error.
   557  */
   558 extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
   559                                                const char *fromcode,
   560                                                const char *inbuf,
   561                                                size_t inbytesleft);
   562 #define SDL_iconv_utf8_locale(S)    SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
   563 #define SDL_iconv_utf8_ucs2(S)      (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
   564 #define SDL_iconv_utf8_ucs4(S)      (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
   565 
   566 /* force builds using Clang's static analysis tools to use literal C runtime
   567    here, since there are possibly tests that are ineffective otherwise. */
   568 #if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
   569 #define SDL_malloc malloc
   570 #define SDL_calloc calloc
   571 #define SDL_realloc realloc
   572 #define SDL_free free
   573 #define SDL_memset memset
   574 #define SDL_memcpy memcpy
   575 #define SDL_memmove memmove
   576 #define SDL_memcmp memcmp
   577 #define SDL_strlen strlen
   578 #define SDL_strlcpy strlcpy
   579 #define SDL_strlcat strlcat
   580 #define SDL_strdup strdup
   581 #define SDL_strchr strchr
   582 #define SDL_strrchr strrchr
   583 #define SDL_strstr strstr
   584 #define SDL_strcmp strcmp
   585 #define SDL_strncmp strncmp
   586 #define SDL_strcasecmp strcasecmp
   587 #define SDL_strncasecmp strncasecmp
   588 #define SDL_sscanf sscanf
   589 #define SDL_vsscanf vsscanf
   590 #define SDL_snprintf snprintf
   591 #define SDL_vsnprintf vsnprintf
   592 #endif
   593 
   594 SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
   595 {
   596     return SDL_memcpy(dst, src, dwords * 4);
   597 }
   598 
   599 /* Ends C function definitions when using C++ */
   600 #ifdef __cplusplus
   601 }
   602 #endif
   603 #include "close_code.h"
   604 
   605 #endif /* SDL_stdinc_h_ */
   606 
   607 /* vi: set ts=4 sw=4 expandtab: */